Wario Land 4 is a 2001 platform game developed by Nintendo and released for the Game Boy Advance. Wario has to gather four treasures to unlock a pyramid and save Princess Shokora from the Golden Diva.

The gameplay of Wario Land 4 (which is generally similar to that of Wario Land II and Wario Land 3) allows for some open-endedness as well as some order of difficulty. After an Entry Passage that serves as a tutorial for the game, there are four main passages: the Emerald, Topaz, Ruby, and Sapphire Passages, in order of difficulty. The Emerald Passage is themed around nature. The Topaz Passage is themed around toys, games, and other "playtime" ideas. The Ruby Passage is themed around mechanics and technology. The Sapphire Passage is themed around horror and danger, prominently involving ghosts and the like. After these four main passages is the "Final" Golden Pyramid, which serves as a recap of these four themes and houses the Golden Passage level and the final boss.

Unlike previous entries, Wario now has a health meter that depletes when he takes damage. If Wario loses all health, he is kicked out of the stage, losing any items he had collected, and must start over.